/*
 * Copyright (c) 2021 The StreamX Project
 * <p>
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.streamxhub.streamx.flink.packer.docker

import com.github.dockerjava.api.DockerClient
import com.github.dockerjava.core.{DefaultDockerClientConfig, DockerClientConfig, DockerClientImpl}
import com.github.dockerjava.httpclient5.ApacheDockerHttpClient

import java.time.Duration

/**
 * @author Al-assad
 */
object DockerRetriever {

  /**
   * docker config param from system properties,
   * see in https://github.com/docker-java/docker-java/blob/master/docs/getting_started.md#properties-docker-javaproperties
   * todo support custom docker configuration parameters in unified configurations in the future
   */
  lazy val dockerClientConf: DockerClientConfig = {
    DefaultDockerClientConfig.createDefaultConfigBuilder().build()
  }

  /**
   * docker http client builder, use ApacheDockerHttpClient by default
   * todo support custom http client configuration parameters in unified configurations in the future
   */
  lazy val dockerHttpClientBuilder: ApacheDockerHttpClient.Builder = new ApacheDockerHttpClient.Builder()
    .dockerHost(dockerClientConf.getDockerHost)
    .sslConfig(dockerClientConf.getSSLConfig)
    .maxConnections(100)
    .connectionTimeout(Duration.ofSeconds(30))
    .responseTimeout(Duration.ofSeconds(45))

  /**
   * get new DockerClient instance
   */
  def newDockerClient(): DockerClient = {
    DockerClientImpl.getInstance(dockerClientConf, dockerHttpClientBuilder.build())
  }


}
